What is the concentration predicting 50% mortality? The threat of bioterrorism m

Question

What is the concentration predicting 50% mortality?

The threat of bioterrorism makes it necessary quantify the risk of exposure to infectious to agents such as anthrax (Bacillus anthracis). Hans (2002) measured the mortality of rhesus monkeys in an exposure chamber to acrosolized anthrax spores of varying concentration. The data are available at whitlockschluter.zoology. ube.ca and are tabulated below Anthrax concentration (spores/) 29,300 32,100 45,300 57,300 64,800 67,000 100,000 125,000 166,000 Survived Died 8

Explanation / Answer

As the maximum numbers of death is 8.

So in the case of the 50% mortality the number of deaths should be 4.

As we see that number of deaths is 4 when concentration is 32,100

Answer :- concentration predicting 50% mortality is 32,100.

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